Astech is my go to for anything asbestos related. Being a plumber there is commonly asbestos found in the workplace. Astech have been great to work with and they are very informative with their test sample results and give good advice as to what steps/precautions should be taken when asbestos is present. It’s good to know somebody like Emrhys is available for advice when you come across asbestos on site, he definitely knows his stuff!